package com.xiong.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

/**
 * @author wardseptember
 * @create 2020-03-31 16:06
 */
@Service
public class PaymentService {


    public String paymentInfoOk(Integer id) {
        return Thread.currentThread().getName();
    }

    @HystrixCommand(fallbackMethod = "paymentInfoTimeoutHandler", commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds", value = "4000")
    })
    public String paymentInfoTimeout(Integer id) {
//        try {
//            TimeUnit.SECONDS.sleep(1);
//        } catch (InterruptedException e) {
//            e.printStackTrace();
//        }
        return Thread.currentThread().getName();
    }

    public String paymentInfoTimeoutHandler(Integer id) {
        return "出错";
    }

    // 服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreakerFallback", commandProperties = {
            @HystrixProperty(name="circuitBreaker.enabled", value = "true"),
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), // 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "100000"), // 请求窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60") // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"流水号：" + serialNumber;
    }

    public String paymentCircuitBreakerFallback(@PathVariable("id") Integer id) {
        return "id 不能为负数";
    }
}
